Located near Morlaix (Brittany, France), the common Plouézoc'h, perched on a hill overlooking the open sea, this megalithic monument measuring 70m long and 25m wide in its western part. He almost disappear once it was operated by carriers on its northwest flank. It is the PR Giot archaeologist who saved the search and prédida to its restoration from 1955 to 1968. It is a double cairn, built in two stages, comprising eleven dolmens. The first, built to the east, with dolerite, is a trapezoidal mounds covering five dolmens aisle. All entries of these corridors are oriented to the southeast. He was flanked to the west of a second mound (granite), which hosts six other dolmens. Them, retaining their shape encorbellée belong to the type of dolmens aisle armoricains, the oldest megalithic monuments. Each piece is decorated with symbols of tools (axes), weapons and animals. Also on the walls on the repetition of the form U. The oldest part of the dry stone tumulus dates from dating to 4850-4450 BC. J.-C. It is the oldest known continental megalithic construction.